GE Lumination® Volumetric Refit Door Kit LED luminaires bring a designer touch to any drop ceiling landscape. Designed specifically for retrofit in to an existing back box, these distinctive products provide a beautiful three dimensional look in an easy-to-install LED solution. They feature a curved diffused lens with smooth uniform light (no pixels or stripes) and delineated details to create visual interest in any ceiling with energy-saving and long-life advantages of LED.